源码:
# include <stdio.h>
int main()
{
/* 定义一个整形指针p */
int *p;
int begin, end;
begin = 10;
/* 给指针p赋初值 */
p = &begin;
/* 将指针指向的值传给变量end */
end = *p;
printf("begin = %d\n", begin);
printf("end = %d\n", end);
/* 输出指针中的地址值 */
printf("p = %x\n", p);
printf("*p = %d\n", *p);
return 0;
}
......
源码:
# include <stdio.h>
int main()
{
int x, y, z, mid, dec;
printf("请任意输入三个整数：\n");
scanf("%d %d %d", &x, &y, &z);
/* 利用mid在x、y、z比较时进行数值交换，使得x最大，z最小 */
if(x < y)
{
mid = x; x = y; y = mid;
}
if(x < z)
{
mid = x; x = z; z = mid;
}
if(y < z)
{
......
源码:
# include <stdio.h>
int main()
{
int x, y;
printf("请输入自变量x：");
scanf("%d", &x);
if(x < 6)
{
y = x - 12;
printf("x = %d, y = %d\n", x, y);
}
else if(x < 15)
{
y = 3*x - 1;
printf("x = %d, y = %d\n", x, y);
}
else
{
y = 5*x + 9;
printf("x = %d, y = %d\n", x, y);
}
return 0;
}
......
源码:
# include <stdio.h>
int main()
{
/* sex代表输血者的性别，weight代表输血者的体重，cubage代表输血量 */
int sex, weight, cubage;
printf("请给出输血者的性别（女性为负数）和体重：(用逗号隔开)");
scanf("%d,%d", &sex, &weight);
if(sex >= 0) /* 若变量sex的数值为非负数，则表示为男性 */
{
if(weight >= 120)
{
cubage = 200;
printf("此人应该输血：%d毫升\n", cubage);
}
else
{
cubage = 180;
&nb ......
源码:
# include <stdio.h>
int main()
{
int num;
/* 下面定义的各变量，分别代表个位，十位，百位，千位，万位，十万位以及位数 */
int indiv, ten, hundred, thousand;
int ten_thousand, hundred_thousand, place;
printf("请输入一个整数(0～999999)：");
scanf("%d", &num);
/* 判断变量num的位数 */
if(num > 99999)
place = 6;
else if(num > 9999)
place = 5;
else if(num > 999)
place = 4;
else if(num > 99)
place = 3;
else if(num > 9)
place = 2;
else
......
源码:
# include <stdio.h>
int main()
{
int i, j, k;
/* 变量i从0到4，表示所画菱形图的第一至第五行 */
for(i = 0; i <= 4; i++)
{
/* 当行数为i时，空格数是i的函数，为4-i个 */
for(j = 0; j <= 3-i; j++)
printf(" ");
/* 星号数也是i的函数，为2i+1个 */
for(k = 0; k <= 2*i; k++)
printf("*");
printf("\n");
}
/* 变量i从0到3，表示所画菱形图的第六至第九行 */
for(i = 0; i <= 3; i++)
{
......
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